//
// Created by Deng on 2021/8/15.
//

#include <iostream>
#include <vector>
#include <cmath>
#include <chrono>
#include <ctime>
using namespace std;
string  getTime()
{
    time_t tt;
    time (&tt);
    char tmp[64];
    strftime(tmp, sizeof(tmp), "%Y-%m-%d %H:%M:%S",localtime(&tt) );
    return tmp;
}
double calculate(double d){
    if(d < 0) return d;
    return std::sqrt( d * d + sqrt(d + 2 * d / 4));
}
int main58() {
    cout << chrono::system_clock::now().time_since_epoch().count() / 1000<< endl;
    cout << getTime()<< endl;
    return 0;
}